linux-kernel - Re: [PATCH] platform/x86: intel-vbtn: Ignore extraneous events from tablet mode

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Date:   Thu, 21 Jun 2018 13:37:45 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Matt Delco <delco@...omium.org>
Cc:     AceLan Kao <acelan.kao@...onical.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        platform-driver-x86@...r.kernel.or, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] platform/x86: intel-vbtn: Ignore extraneous events from
 tablet mode

On Thu, Jun 21, 2018 at 01:12:07PM -0700, Matt Delco wrote:
> The Dell laptop I have has an ACPI that sends 0xCB and 0xCC on entering
> tablet mode.  On exiting tablet mode it sends 0xCA and 0xCD.  This
> change has the driver ignore 0xCA and 0xCB.
> 
> Signed-off-by: Matt Delco <delco@...omium.org>

This looks good to me.

Acked-by: Dmitry Torokhov <dmitry.torokhov@...il.com>

> ---
>  drivers/platform/x86/intel-vbtn.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c
> index c13780b8dabb..4c6f2bb1d1ac 100644
> --- a/drivers/platform/x86/intel-vbtn.c
> +++ b/drivers/platform/x86/intel-vbtn.c
> @@ -38,8 +38,10 @@ static const struct key_entry intel_vbtn_keymap[] = {
>  	{ KE_IGNORE, 0xC7, { KEY_VOLUMEDOWN } },	/* volume-down key release */
>  	{ KE_KEY,    0xC8, { KEY_ROTATE_LOCK_TOGGLE } },	/* rotate-lock key press */
>  	{ KE_KEY,    0xC9, { KEY_ROTATE_LOCK_TOGGLE } },	/* rotate-lock key release */
> -	{ KE_SW,     0xCC, { .sw = { SW_TABLET_MODE, 1 } } },	/* Tablet */
> -	{ KE_SW,     0xCD, { .sw = { SW_TABLET_MODE, 0 } } },	/* Laptop */
> +	{ KE_IGNORE, 0xCA, { KEY_UNKNOWN } },			/* Laptop key press */
> +	{ KE_IGNORE, 0xCB, { KEY_UNKNOWN } },			/* Tablet key press */
> +	{ KE_SW,     0xCC, { .sw = { SW_TABLET_MODE, 1 } } },	/* Tablet key release */
> +	{ KE_SW,     0xCD, { .sw = { SW_TABLET_MODE, 0 } } },	/* Laptop key release */
>  	{ KE_END },
>  };
>  
> -- 
> 2.18.0.rc2.346.g013aa6912e-goog
> 

-- 
Dmitry